The science-fiction and detective-story genres are combined in the made-for-TV The Aliens are Coming. Tom Mason plays an astrophysicist who is convinced that malevolent extraterrestrials are in our midst. It is Mason's contention that the invaders have assumed human form, in preparation for world conquest (sound familiar?) Originally telecast March 2, 1980, The Aliens are Coming later showed up in an expanded version as a two-parter, shown on NBC over two consecutive weekends. The project began as a TV pilot film titled Alien Force